Answer:
Several key events and factors contributed to convincing the majority of Americans that they would eventually need to enter World War II against Germany. These include:
1. **German Aggression in Europe**: Germany's aggressive expansionist policies in Europe, including the invasion of Poland in 1939, demonstrated a clear threat to stability and peace in the region. This violated principles of international law and norms.
2. **Fall of France**: The swift defeat of France by Germany in 1940 shocked many Americans and highlighted the effectiveness of German military tactics. It became clear that Germany posed a significant threat to European stability.
3. **Lend-Lease Act**: In 1941, the U.S. passed the Lend-Lease Act, which allowed the United States to provide military aid and supplies to Allied nations (including the United Kingdom, China, and later the Soviet Union) without directly entering the war. This signaled a shift towards active support of the Allied powers.
4. **Attack on Pearl Harbor**: On December 7, 1941, Japan launched a surprise attack on the U.S. Pacific Fleet at Pearl Harbor, Hawaii. This event, which caused significant loss of life and destruction, directly led to the U.S. declaring war on Japan the following day.
5. **Germany's Declaration of War on the U.S.**: On December 11, 1941, Germany declared war on the United States, which prompted the U.S. to formally enter World War II on the side of the Allies.
6. **Public Opinion and Media Coverage**: The events in Europe and Asia were extensively covered in the media, which influenced public opinion. Images and reports of the war's impact on civilians and soldiers played a significant role in shaping American sentiment.
7. **Fears of Axis Domination**: There was a growing concern that if the Axis Powers (Germany, Italy, and Japan) were to achieve their objectives, it could lead to a world dominated by authoritarian regimes and ideologies contrary to American values and interests.
8. **Ideological and Moral Convictions**: Many Americans believed that it was a moral imperative to fight against totalitarian regimes and to protect democratic principles and human rights.
These factors, among others, gradually shifted public sentiment towards active involvement in the war against Germany and its Axis allies. The attack on Pearl Harbor was a catalyzing event, solidifying American resolve and commitment to the war effort.
Step-by-step explanation: